Stepping Numbers

Given N and M find all stepping numbers in range N to M

The stepping number:

A number is called as a stepping number if the adjacent digits have a difference of 1.
e.g 123 is stepping number, but 358 is not a stepping number

Example:

N = 10, M = 20
all stepping numbers are 10 , 12 

Return the numbers in sorted order.

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  • Epic systems
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